package com.hmdp.utils;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.StrUtil;
import com.hmdp.dto.UserDTO;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * @ClassName LoginInterceptor
 * @Description 刷新token
 * @Author guobenqi
 * @Date 2022/4/22 15:39
 */
public class RefreshTokenInteceptor implements HandlerInterceptor {
    private StringRedisTemplate stringRedisTemplate;


    public RefreshTokenInteceptor(StringRedisTemplate stringRedisTemplate){
        this.stringRedisTemplate = stringRedisTemplate;
    }
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //获取请求头中的token
        String token = request.getHeader("authorization");
        if (StrUtil.isBlank(token)) {
            return true;
        }
        String key = RedisConstants.LOGIN_USER_KEY + token;
        Map<Object, Object> userMap = stringRedisTemplate.opsForHash().entries(key);

        if (userMap.isEmpty()) {

            return true;
        }
        //将map转成对象
        final UserDTO userDTO = BeanUtil.fillBeanWithMap(userMap, new UserDTO(),false);

        UserHolder.saveUser(userDTO);

        //刷新过期时间
        stringRedisTemplate.expire(key,RedisConstants.LOGIN_USER_TTL, TimeUnit.MINUTES);
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

        UserHolder.removeUser();
    }
}
